excess oil usage 1989 FXRS

My 89 Low Rider requires a quart of oil every 300 miles. It has good compression(160 psi) on both cylinders and the plugs are not fouled. It does not smoke from the exhaust, so I don't see how it could be burning this much oil. There are only a small few drops on the ground where I park it. Any ideas about where this oil could be going?

My 89 Low Rider requires a quart of oil every 300 miles. It has good compression(160 psi) on both cylinders and the plugs are not fouled. It does not smoke from the exhaust, so I don't see how it could be burning this much oil. There are only a small few drops on the ground where I park it. Any ideas about where this oil could be going?